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          2017 CCPC 杭州赛区小结 By ruiker @ 广东老乡
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        <h2 id="day-0">Day 0</h2>
<p>上午和shb/颜学长/sfiction/jtjl从玉泉打车去武林广场，然后坐（站）了一万年的地铁，终于到了浙理工。 <span id="more"></span> 报道之后数次建议jtjl去浙传看看女生都被jtjl拒绝，看起来这个人真的是个给。</p>
<p>下午就是热身赛，场地小的爆炸，感觉一个过道都容纳不了两个搞学长。热身赛A题，我们一看三分钟就有人过，肯定是个暴力啊，然后喜获TLE，换了个合理复杂度的暴力，才过掉。之后johann写了个大模拟B，我和lzw讨论了半天矩形切割，lzw就去写了个异常扭曲的算法，过掉了C，胜利AK，热身赛rank7。然后我来测试一下环境，发现eclipse好像不太好用啊，似乎无法运行程序，于是被志愿者教做人了。之后我就很贱的跑去shb那里，问他eclipse好不好使呀，然后强行教了shb做人。 赛前的晚上，发现我们队好像没有数列表，妄图抢走jtjl队的数列表，被jtjl怒斥。</p>
<h2 id="day-1">Day 1</h2>
<p>这次比赛是复旦大学出题，所以对题目质量期望还是比较高的。johann和lzw瞬间发现签到题A，<strong>A1y5</strong>。我去看了IJKL，感觉J是个**题，就让lzw接着写，<strong>J1y16</strong>。然后此时BCD都有队伍过了，我们三个就分头开BCD，lzw很快会做了B，<strong>B1y26</strong>。然后我和johann讨论了一下，也很快会做了D，<strong>D1y40</strong>。获得了超级顺利的前期。 C题是一个不平衡博弈，看上去就是个智商题。三个人想了半天，感觉没什么思路，他们两个似乎对题意有了些奇怪的理解，就发了一波clarification，结果复旦给了我们一个错误的题意。当时觉得这个题意好难...完全不会做，后来发现按照复旦回答我们的题意，似乎这样根本过不了样例啊？就又发了一个clarification，复旦终于告诉了我们正确的题意...然后我去了趟厕所，猜了个结论，和lzw说了一下，他表示好像有点合理，<strong>C1y76</strong>。</p>
<p>之后我们三个讨论了一下，很快也讨论出了K的做法，但这个时候复旦又发了个clarification，说题面中的下取整变成了类型强转...然后三个人再次陷入绝望。讨论了半天，终于扭曲的解决掉了这个问题，已经快写了一半，复旦又发了个clarification，说题意不变还是下取整...然后K又出现了一些超时问题，终于<strong>K3y181</strong>。 这时还能在金牌区苟延残喘，我们觉得还是要再过一题才能有金。开了E和G，感觉没有一道题能做。johann试图去开F的大暴力，被我拦住了。三个人一直卡思路卡到了封榜。lzw表示他在被我要求学习FWT的时候，看过一个例题，题意和这个E有一些相似，需要树分治然后怎样怎样搞一搞，但是这个怎样搞的他已经忘了。johann想到了G的一个奇怪的转化，讨论了一下发现只有N^2的递推做法，感觉一看就过不了。但是这个时候反正已经爆炸了，就让johann先上去莽一下。突然lzw说会E的树分治做法了，跟我乱讲一通我听的迷迷糊糊，然后lzw自己好像也不太懂，就上机乱写一通，竟然<strong>E1y272</strong>，害怕极了。</p>
<p>最后半个小时，我和lzw大致了解了刚才做法的正确性，johann乱搞G，自然没有通过，后来询问一队，发现是个奇怪的按秩NTT？</p>
<h2 id="经验教训">经验教训</h2>
<p>杭州强队多，牌子少，感觉能得到金牌完全是侥幸。后期能力实在太不足了啊，根本做不出难题...</p>

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      visitor    : true,
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      serverURLs : ''
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